<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../react18/react.development.js"></script>
    <script src="../react18/react-dom.development.js"></script>
    <script src="../react18/babel.min.js"></script>
</head>

<body>
    <div id="app"></div>
    <script type="text/babel">
        class App extends React.Component{
            constructor(){
                super()
                this.weatherHandle = this.weatherHandle.bind(this)
            }
            state = {
                count: 0,
                nice: true
            }

            render() {
                const {count,nice} = this.state
                return (
                    <div>
                        <button onClick={this.addHandle}>加加加</button>
                        <p>{count}</p>
                        <button onClick={this.weatherHandle}>今天天气如何</button>
                        <p>{nice?"非常奈斯":"非常bed"}</p>
                    </div>
                )
            }

            addHandle = ()=>{
                const {count} = this.state
                this.setState({
                    count: count+1
                })
            }

            weatherHandle(){
                const {nice} = this.state
                this.setState({
                    nice: !nice
                })
            }
        }

        const root = ReactDOM.createRoot(document.getElementById("app"))
        root.render(<App />)
    </script>

</body>

</html>